Research Article

Rifampin-Releasing Triple-Layer Cross-Linked Fresh Water Fish Collagen Sponges as Wound Dressings

Figure 4

Thicknesses of the tested collagen sponges (): homogeneous collagen sponges (H), sandwich-structured sponges (S), sandwich-structured sponges—core material (S-C), sandwich-structured sponges—face sheet (S-F), sponges with rifampin (-R). The arrows denote statistically significant differences between identical sponges with or without rifampin (-test, ).